


News Headlines
- winter_news
- New: Preliminary Survey Results (Text) From the North McAllen Microburst of May 8, 2025
- New! The 2025 Rio Grande Valley/Deep South Texas Hurricane Guide is Here
- Nuevo! Guia de Huracanes 2025 del Valle del Rio Grande/Extremo Sur de Texas es Aqui
- New: May-July Outlook - Building Heat Risk by June; Water Resource Issues Continue While Monitoring Severe Weather/Flood Potential
Current conditions at
Mid Valley Airport (KTXW)
Lat: 26.18°NLon: 97.97°WElev: 70ft.
Mostly Cloudy
76°F
24°C
Humidity | 88% |
Wind Speed | S 12 G 18 mph |
Barometer | 29.73 in |
Dewpoint | 72°F (22°C) |
Visibility | 10.00 mi |
Heat Index | 76°F (24°C) |
Last update | 14 May 1:35 am CDT |
Extended Forecast for
Mercedes TX
Overnight
Low: 74 °F
Mostly Clear
Wednesday
High: 94 °F
Sunny and
BreezyWednesday Night
Low: 76 °F
Partly Cloudy
and BreezyThursday
High: 96 °F
Mostly Sunny
and BreezyThursday Night
Low: 77 °F
Partly Cloudy
Friday
High: 96 °F
Mostly Sunny
then Sunny
and BreezyFriday Night
Low: 78 °F
Partly Cloudy
Saturday
High: 97 °F
Mostly Sunny
then Sunny
and BreezySaturday Night
Low: 78 °F
Partly Cloudy
Detailed Forecast
Overnight
Mostly clear, with a low around 74. South southeast wind around 15 mph, with gusts as high as 28 mph.
Wednesday
Sunny, with a high near 94. Breezy, with a south southeast wind 15 to 20 mph, with gusts as high as 32 mph.
Wednesday Night
Partly cloudy, with a low around 76. Breezy, with a south southeast wind around 18 mph, with gusts as high as 33 mph.
Thursday
Mostly sunny, with a high near 96. Heat index values as high as 105. Breezy, with a south southeast wind 18 to 22 mph, with gusts as high as 36 mph.
Thursday Night
Partly cloudy, with a low around 77. South southeast wind 14 to 17 mph, with gusts as high as 29 mph.
Friday
Mostly sunny, with a high near 96. Breezy, with a south southeast wind 14 to 20 mph, with gusts as high as 31 mph.
Friday Night
Partly cloudy, with a low around 78. South southeast wind 13 to 16 mph, with gusts as high as 28 mph.
Saturday
Mostly sunny, with a high near 97. Breezy, with a south southeast wind 11 to 18 mph, with gusts as high as 30 mph.
Saturday Night
Partly cloudy, with a low around 78. Southeast wind 14 to 16 mph, with gusts as high as 28 mph.
Sunday
Mostly sunny, with a high near 95. Breezy, with a south southeast wind 14 to 21 mph, with gusts as high as 33 mph.
Sunday Night
Mostly cloudy, with a low around 78. Breezy, with a southeast wind 15 to 18 mph, with gusts as high as 30 mph.
Monday
Mostly sunny, with a high near 96. Breezy.
Monday Night
Mostly cloudy, with a low around 79.
Tuesday
Mostly sunny, with a high near 98.
Additional Forecasts and Information
Basemap Options
Click map to change the forecast location
Loading map...
ABOUT THIS FORECAST
Point Forecast:
Mercedes TX
26.16°N 97.93°W
26.16°N 97.93°W
1:35 am CDT May 14, 2025
1am CDT May 14, 2025-6pm CDT May 20, 2025